Seal lock



Patented Mar. 6, 1923.

,UNITE WILHELM ENGEL, 0E MED, NEAR EnANnEoET-on-TnE-MAIN," GERMANY,

SEAL LocK.

n "Application filed May`22,

To all 'whom t may concern: n y

Be it known that I, l/VILHELM ENGEL, ka

citizen of the Grerrnan Republic, and a resident of Nied, near Frankforton-the-Main,

put in' place, but require the application ofl aspecial 'keytoireleaselthe bolt 'and enable the lockto be opened;` nessential feature of my invention resides inthe cooperation of angles to eac-h other; Fig. 6 is a 4transverse section of thefkey on the line 6-.-6-of Fig. 5; Fig. 7 is av composite view showing two seals or leadsf the left-'hand seal being in nor-V showing the lead container or and in side elevation.y

the bolt with a locking ring for effecting the locking actionproper 'and Jfurthermore in its adaptation florthe reception of a seal'or what 'may be terr'nedaflea'ld for sealing purposes, aswill vbe more fully described here inafter. c

To this end,'I refer to thev accompanying' drawing, in'vvhich similar letters of reference denote similar l,parts throughout the several views, and in Which Figure lis a vertical section of the lock; lligp is a horizontal section on the .line'2-"2 of Fig. 'lgFigrB is a side'view ofthe bolt; Figs. 4

and 5 are 4side lvieivs of the key, at right mal condition, the right-hand seal being punched; and Fig. 8 is also a composite view The lock consists chiefly-oftWo parts, viz,

the casing a-'andthe bolt l). vThe casing is aHiXed to the Wall of the car, or to the'frarne ofithedoo'to be locked, lby means of bolts, for'vvhicli a hole or 'holes in a lug 7i, isvpro# vided., The `lock casing. isrnade of iron or "steel,"andfhasV one 'or more inner annular A`fhing'eHeSforlj'projections la, each, preferably l,forinedvith anfinwardly inclined topl surface. The upperlend of the casing is contractedso as to forin a providedwith an inwardly proiecting shoulder lcj similar ,case vin plan of the bolt.

19221 serial N0.,5e2,'ss3. f

casingextends inwards andupvva'rds a tube d which serves as a guide `for the key.

'The bolt lbvis a hollovv'cylindrical body which has vertical slots ZJ in its Wall. Alt the two' sides of each slot, eyes e areprovided, having pins 0 carrying paWls n.' The normalposition of these pavvls is that shown inlig. l, for they areheld in this: position With their loi'ver ends'n` abutting against the Wall of the bolt Z; by the Weight a'nd'overhangof their upper portions; but ifdes'ired,

springs may be provided to assist in holding them in that position. ln this position, the upper ends of the paw'lslie below the pro-- jections la and' Ze. rEhey move radially inward Whenfthe "bolt inintrodi'lced into the casing.

The bolt b has below-itsA head a transverse Vrecess g for the receptio'nfof a case a* contai-ning the seal or lead "and comprisingtivo 3 parts Which are connected by "a hinge r and each of which hasa central hole, preferably i of a specialshape asshoivn at r2 inFig; 8. Thehole is closed by'a vpiece p ofpaper, paste-board, lead or the like 'constituting the seal, which is placedbetween the ktwo Aineinbers forming the case or frame r andivhich serves to receive suitable inscriptions or the like. The headr of" the bolthaslateral recess'es's and a peripheral vflangey v,'fthe dialneter of Whiclnlatter corresponds approximately to that of the casing Hinged to l the head Aor flangeat' t2 is a cover e which ,closes the vcentral aperture t. provided-over the recess g. f y 1 D The lock ring f Which/is to7 becoupled With the neck ofth'e lock `casing ais adapted 'to be turned',l as Wellf as displaced. axially,

upon a bolt y aliixed tothe door lie/locked. ln its locking position, the ring .takes over the neck m ofthe casing, asshoyvn in'Fig. l. The bolt bis inserted. after the`ring /fhas been placed upon the' casing; butprior to doing this,A the seal 79 is inserted inv the caser,

` and this latter isthen placed in the 'recess This having been done, the

bolt b, which has an aperturefbz in its hottorn, is inserted into the casing with its apertured bottoni-r lridii'ig down ony they guide Itube fl, lWhen'-thebolt reaches its loivermost position', thefpavvls 'n 4fall back below "the "projections handle', respectively, With `their noses ifv engaging in the slots 5"," whereby the bolt is locked, as is, `consequently,"alsothe fine fr c 1 r ;r

' VOpening of' the 4lockcanfbe*effected-:bully with the aid of the key shown in Figs. 4 and 5. This key consists of a hollow body c having a rib or feather u adapted to engage in a groove u in the bolt and having, furthermore, an internal pin c to eng-age in the tube d. These members u and c serve for guiding the key while it is being put in place. There are also outer lugs o distributed over the circumference and the length of the key body c. The number and position of these lugs o correspond to the number' and position of the pawls n, the nose or projection g on each pawl being adapted to (2o-operate with one of the lugs o. As the latter engage with the noses g, the pawls a are turned upon their supporting pins 0 and caused to disengage the projections 7c and 70', respectively, so that the bolt ZJ is then no longer locked, but ready to be withdrawn. To facilitate withdrawal of the bolt the key is provided with two pawllike levers fw hinged at m to the key and having broadened portions or plates Z constituting linger-pieces. Preferably springs may be provided, which tendto spread the levers or arms 'w aw-ay from the key-body c, and which are compressed when the arms w are moved into the position shown in Figs. 4 and 5. The gripping ends of the members fw are intended to engage in the recesses s, or in an inner circumferential groove, provided at the top of the bolt Z9, so that the latterl can be withdrawn by means of the key, i. e.,.with the aid of the pawls w engaging in the recesses 8.

It is obvious that the key can be inserted only by destroying the seal p. In being .forced down intoV the tube CZ of the bolt Z), the key willpunch the seal p in the manner shown in the right-hand half of Fig. 7.

If springs are provided in connection with the arms ce, the latter will be adapted to engage automatically in the recesses s. To separate the key from the bolt, the pawls 0.0 are moved inward so that their gripping ends may be disengaged from said recesses.

The key is required only for opening the lock, while the closing thereof is effected by the bolt Z9.

While I have shown specific structural details, I desire it to be understood that my invention is not restricted thereto, but that any equivalent means accomplishing substantially the same results may be used without departing from the spirit and scope of my invention.

I claim as my invention:

1.111 a seal lock, the combination of Aa case; a locking ring engageable with the case; a bolt insertable through said ring into the interior of the case to hold the two inlocked relation, said bolt having a sealreceiving space therein; cooperating locking devices within said case pro-vided on the latter and on the bolt to prevent Withdrawal prevent its withdrawal therefrom; and a` key engageable with said bolt to release said locking members and incidentally break a seal in said space.

3. ln a seal lock, the combination of a case; a locking ring engageable with the case; a tubular bolt insertable through said ring into the interior of the case to hold the two in locked relation, said bolt having a seal-receiving space therein; locking members movably mountedl on vsaid bolt; cooperating parts on the interior of said case automatically engaged by said locking members when said bolt is inserted into the case to prevent its withdrawal therefrom; and a key insertable through a seal in said space and into said bolt to yrelease said locking members. l f

4. ln a seal lock, the combinationof a case; a locking ring engageable therewith; a tubular bolt insertable through said ring into the interior of the case to hold the two in locked relation, said bolt having a sealreceiving space therein and also having a plurality of longitudinal slots; a locking pawl pivotally mounted directly opposite each slot and extending inwardly through the same at one. end; va plurality of cooperating' projections on the interior of the case automatically engaged by the outer ends of the pawls when `said bolt is inserted into said case to prevent its withdrawal therefrom; and a key insertable through a seal in said space int-o said bolt to engage the inner ends of the pawls and release them from said projections.

5. A seal lock, according to claim 4, in which the surface of the key is provided with releasing lugs corresponding in number and position to the locking. pawls and adapted to engage the inner ends of the pawls.

6. In a seal lock, the kcombination of a case; a locking ring engageable with the case; a tubular bolt insertable through said ring into the interior of the case to hold the two in locked relation, said bolt having a seal-receiving space therein; locking members, movably mounted on said bolt; cooperating parts on the interior of said. case automatically engaged by said locking mem-l bers when said bolt is inserted into the case to prevent its withdrawal therefrom; and a key insertable into said bolt to release said locking members and incidentally break a seal in said space; said key and bolt constituting companion parts, one of which is formed with a longitudinal guide groove and the other With a rib slidable therein.

7. In a seal lock, the combination of a case; a locking ring engageable therewith; a tubular bolt insertable through said ring into the interior of the case to hold the two in locked relation, said bolt having a sealreceiving` space therein and'also having a plurality of longitudinal slots; a locking pawl pivotally mounted directly oaposite each slot and extending inwardly t rough the same at one end; a plurality oi' coop` erating projections on the interior of the case automatically engaged by the outer ends ofthe' pawls when said bolt is inserted into said case to prevent its withdrawal therefrom; and a key insertable through a seal in said space into the said bolt to engage the inner ends of the pawls and release them from said projections, said key vand bolt constituting companion parts, one of which is formed with a longitudinal guide groove and the other with a rib slidabl therein.

8. Inl a seal lock, the combination of a case; a locking ring engageable with the case; a tubular bolt insertable through said ring into the interior of the case to hold the twoV in locked relation, said bolt having a seal-receiving space therein; locking inembers movably mounted on said bolt; cooperating parts on the interior of said case automatically engaged by said locking members when said bolt is inserted into the oase to prevent its withdrawal therefrom; and a key inserta-ble into said bolt to release said locking members and incidentally break a seal in said space, said key and bolt having interfitting guiding members.

9. In a seal lock, the combination of a case; a locking ring engageable with the case; a. tubular bolt insertable through said ring into the interior of the case to hold the two in locked relation, said bolt having a sealreceiv-ing space therein; locking mem-l bers movably mounted on said bolt; coop- 4 erating parts on the interior of said case automatically engaged by said locking members when said bolt in inserted into the case to prevent its Withdrawal therefrom; a key insertable into said bolt to release said locklO. In a 'seal lock, the combinationof a case; a locking ring engageable therewith;

a tubular bolt insertab'le through said ring into the interior of the case to hold the twvo in locked relation; said bolt having a seal- -v receiving space therein; coopera-ting locking devices within the-case provided on the latter and on the bolt to prevent withdrawal of said bolt; a key'insertable into the bolt to release said locking devices and inciden?` tally break a seal in said space; and means on said key engageable with said bolt to withdraw the same when.y the key is ywith-` drawn. fr

1l. In a seal lock, the combination of a case; a locking ring engageable therewith; a tubular bolt insertable through said ring into the interior of the case to hold the two in locked relation, said bolt having a seal-` receiving space therein; cooperating locking devices within the case provided on the latter and on the vbolt to prevent withdrawal of said bolt; a key insertable into the bolt to release' said locking devices and incidentally break a seal in said space; and grippingA pawls on said key engageable with the boltl when the key is inserted thereinto, and

adapted to withdraw said bolt whenthe v*key is Withdrawn. In testimony whereof I affix my signature in presence of a Witness. i

' WILHELM 'ElSTGrEIi` Vitness: p f p y G. FLESCHER. y 

